247,593 research outputs found
Phyllotetranychus Sayed 1938
No full textGenus <i>Phyllotetranychus</i> Sayed, 1938 <p> <b>Type species:</b> <i>Phyllotetranychus aegyptium</i> Sayed, 1938</p> <p> <b>Diagnosis:</b> Full complement of 16 dorsal setae; dorsal setae large, broadly orbicular to ovate, leaf-like and with pseudovenation; setae <i> h 2</i> not flagellate; anterior margin of prodorsum with two pairs of prodorsal projections; palps two-segmented (tibio-tarsus with one eupathidium (<i>ul'ζ</i>) and two setae, femorogenu with one seta (<i>d</i>)); two pairs of pseudanal setae <i> ps 1–2</i> ; ventral, genital and anal plates not sclerotised or developed.</p>Published as part of <i>Mahdavi, Sayed Mosayeb, Latifi, Malihe & Asadi, Mahdieh, 2019, A new species of Phyllotetranychus (Acari: Tenuipalpidae) from Iran, pp. 566-578 in Zootaxa 4565 (4)</i> on page 567, DOI: 10.11646/zootaxa.4565.4.10, <a href="http://zenodo.org/record/2591261">http://zenodo.org/record/2591261</a>
Aegyptobia Sayed, 1950 1950
No full textGenus <i>Aegyptobia</i> Sayed <p> <i>Aegyptobia</i> Sayed, 1950: 1018.</p> <p> Type-species: <i>Aegyptobia tragardhi</i> Sayed, by original designation.</p>Published as part of <i>Stathakis, Theodoros I., Vrettos, Dimitrios P., Panou, Eleni N. & Kapaxidi, Eleftheria V., 2023, New recordsof falsespider mites (Acari: Trombidiformes: Tenuipalpidae) in Greece, pp. 456-466 in Zootaxa 5230 (4)</i> on page 457, DOI: 10.11646/zootaxa.5230.4.3, <a href="http://zenodo.org/record/7564067">http://zenodo.org/record/7564067</a>
Dolichotetranychus Sayed 1938
No full textGenus <i>Dolichotetranychus</i> Sayed <p> <i>Dolichotetranychus</i> Sayed, 1938: 606.</p> <p> Type-species: <i>Stigmaeus floridanus</i> Banks, by original designation.</p>Published as part of <i>Stathakis, Theodoros I., Vrettos, Dimitrios P., Panou, Eleni N. & Kapaxidi, Eleftheria V., 2023, New recordsof falsespider mites (Acari: Trombidiformes: Tenuipalpidae) in Greece, pp. 456-466 in Zootaxa 5230 (4)</i> on page 461, DOI: 10.11646/zootaxa.5230.4.3, <a href="http://zenodo.org/record/7564067">http://zenodo.org/record/7564067</a>
Brevipalpus olearius Sayed 1950
No full text<i>Brevipalpus olearius</i> Sayed, 1950. <p>(Fig. 4 B).</p> <p> <i>Brevipalpus olearius</i> Sayed, 1950: 1018.</p> <p> <b>Material examined</b>: 2 females ex <i>Olea europea</i> L.(Oleaceae) <b>EGYPT:</b> Qalubia province, Moshtohor village, 30 <b>◦</b> 21'18"N, 31 <b>◦</b> 13'30"E, 19 May 2012, coll. A.M. Halawa; 2 females ex <i>Olea europea</i> L.(Oleaceae) <b>EGYPT</b>: Giza province, Dokki, 30 <b>◦</b> 02'6"N, 31 <b>◦</b> 13'30"E, 17 October 2012, coll. A.M. Halawa.; 1 female ex <i>Olea europea</i> L.(Oleaceae) <b>EGYPT</b>: El- Sharkia province, Enshas, 30 <b>◦</b> 23'6"N, 31 <b>◦</b> 27'18"E, 13 June, coll. M.M. Fawzy.</p> <p> <b>Remark.</b> The holotype of <i>Brevipalpus olearius</i> was found on <i>Olea europea</i> L in Egypt by Sayed (1950). Specimens collected in this study were compared with the holotype deposited at Plant Protection Research Institute (PPRI), Agricultural Research Center (ARC), Egypt.</p>Published as part of <i>Halawa, Alaa M. & Fawzy, Magdy M., 2014, A new species of Brevipalpus Donnadieu (Acari: Tenuipalpidae) and key to the Egyptian species, pp. 87-95 in Zootaxa 3755 (1)</i> on page 92, DOI: 10.11646/zootaxa.3755.1.4, <a href="http://zenodo.org/record/285474">http://zenodo.org/record/285474</a>
Terpnacarus zaheri Momen, Sayed & Nasr, 2004, n. sp.
No full textTerpnacarus zaheri n. sp. (Figs 1–7) ADULT FEMALE. Dimensions: length of body (including gnathosoma) 333–346, length of body (excluding gnathosoma) 301–306, breadth of body 180–189. Dorsum (Figs 1 & 2). The prodorsum bears 6 pairs of setae (Fig. 2). Setae le robust, distinctly logner than setae xp and in, are of equal length of setae xa (35–38), setae ro (14– 16), which situated on the naso, are shorter than setae in (18–21). Setae xp are very small and pectinate. The naso is large and bears a lenslike eye ventrally. Sensillae bo are filamentous and ciliate (56–61 long). The central part of the prodorsum has longitudinal smooth striae. The hysterosoma (Fig. 1) bears 36 pairs of plumose setae which are situated in 9 transverse rows. Striae on the dorsum of the hysterosoma are smooth. Venter: The genital opening (Fig. 6) is relatively large and the covers are clearly defined. Each cover bears 14 large and pilose setae, arranged in two rows. Three pairs of genital papillae as well as 3 pairs of long, nude internal setae are present. Six pairs of paragenital setae are present. The anal pore is surrounded by 6 pairs of anal setae and 5 pairs of paraanals. Gnathosoma (Figs. 3–5): The chelicerae (Fig. 3) are bulky, chelatedentate and bear 2 setae dorsally. The hypognathum (Fig. 4) bears 6 pairs of setae, the anterior pair, small and nude, while the second pair are robust and relatively blunt distally. The rutella are well developed and each terminates in a sharp bladelike edge. The palpal tarsus (Fig. 5) bears 11 plumose setae, one smooth and short seta, one obtuse solenidion and terminally one yataganshaped solenidion. Legs: Leg setal patterns (formula indicates setation from tarsus to trochanter with solenidion in parentheses). Tarsus I (Fig. 7) bears one long, slender solenidion and one famulus, while tibia I bears 2 slender solenidia and genu I bears 3 mucronate solenidia. The ambulacra of all the legs are composed of a large, rayed clawlike empodium and two true claws which are barbed and smaller than the empodium. MALE: Unknown. Etymology: The new species is named for Prof. M. Zaher, Department of Zoology, Cairo University, Egypt. Type data: Female holotype collected from debris under date palm, paratypes 5 females collected with the holotype, Egypt, 20 September 2003 by Dr. A. A. Sayed. Remarks: The genus Terpnacarus has not been recorded in Egypt before this report. The new species resembles T.carolinaensis Theron (1976) described from South Africa in having smooth and fine striation on the hysterosomal integument. It differs from the latter by having 36 pairs of hysterosomal setae opposed to 34 pairs in T. carolinensis, in having one seta on trochanter I compared to nil in T. carolinaensis. It can be separated also by having 5 pairs of para anal setae compared to 6 pairs in T. carolinaensis.Published as part of Momen, F. M., Sayed, A. A. & Nasr, A. K., 2004, A new species of the genus Terpnacarus Grandjean (Acari: Terpnacaridae) from Egypt, pp. 1-4 in Zootaxa 543 on pages 2-4, DOI: 10.5281/zenodo.15734
Consistent tomography under partial observations over adaptive networks
No full textThis paper studies the problem of inferring whether an agent is directly influenced by another agent over a network. Agent i influences agent j if they are connected (according to the network topology), and if agent j uses the data from agent i to update its online learning algorithm. The solution of this inference task is challenging for two main reasons. First, only the output of the learning algorithm is available to the external observer that must perform the inference based on these indirect measurements. Second, only output measurements from a fraction of the network agents is available, with the total number of agents itself being also unknown. The main focus of this paper is ascertaining under these demanding conditions whether consistent tomography is possible, namely, whether it is possible to reconstruct the interaction profile of the observable portion of the network, with negligible error as the network size increases. We establish a critical achievability result, namely, that for symmetric combination policies and for any given fraction of observable agents, the interacting and non-interacting agent pairs split into two separate clusters as the network size increases. This remarkable property then enables the application of clustering algorithms to identify the interacting agents influencing the observations. We provide a set of numerical experiments that verify the results for finite network sizes and time horizons. The numerical experiments show that the results hold for asymmetric combination policies as well, which is particularly relevant in the context of causation
Brevipalpus olearius Sayed 1950
No full text<i>Brevipalpus olearius</i> Sayed, 1950 (Figure 8) <p> Diagnosis (Female) — Resembles <i>B. oleae</i> in all respects except for the number of setae on trochanters III and IV and the dorsal setal arrangements of the deutonymphs. Dorsum irregularly reticulate-striate medially and striate-granular laterally. Dorsal body setae short, narrowly lanceolate and serrate. Three pairs of dorsocentral setae and <i>f2</i> present (Fig 8A).</p> <p>Venter smooth medially from ventral shield to gnathosoma, but laterally with reticulations and granules. Ventral, genital, and anal shields striate (Fig 8B). Dorsal setae on genua I-II and femora I-III broadly lanceolate and serrate. Spermatheca a very long, slender, coiling tube terminating into a large, prominent hairy bulb (Fig 8C); tarsus II with one solenidion distally; one seta on trochanter III and trochanter IV without setae; rostrum reaches to distal end of genu I.</p> <p> Deutonymph — Setae <i>sc2, c3, d3, e3, f3</i> and <i>h1</i> longest, broadly lanceolate, and serrate; setae <i>v2, sc1, c1, d1, e1, f2, h2</i> much shorter and serrate (Fig 8D).</p> <p> Hosts and localities — <i>Olea europaea</i> L. (Oleaceae). Described from Egypt by Sayed, 1950, but also reported from Crimea, Ukraine, Greece, Iran, Italy, Libya, Turkey, and Israel (Castagnoli & Pegazzano, 1979; Hatzinikolis, 1986; Smith Meyer & Gerson, 1981; Khanjani <i>et al.</i>, 2013).</p> <p>Symptoms — Unknown.</p>Published as part of <i>Ueckermann, Edward A., Palevsky, Eric, Gerson, Uri, Recht, Eitan & Theron, Pieter D., 2018, The Tenuipalpidae (Acari: Trombidiformes) of Israel, pp. 483-525 in Acarologia 58 (2)</i> on page 494, DOI: 10.24349/acarologia/20184255, <a href="http://zenodo.org/record/5399530">http://zenodo.org/record/5399530</a>
On Functions Preserving Convergence of Series in Fuzzy n-Normed Spaces
No full textThe purpose of this paper is to introduce finite convergence sequences and
functions preserving convergence of series in fuzzy n-normed spaces
Tenuipalpus granati Sayed 1946
No full textTenuipalpus granati Sayed 1946 (Figs 82–88) Tenuipalpus granati Sayed 1946: 100; Wainstein 1960: 247; Livshitz & Mitrofanov 1967: 31; Meyer (Smith) 1979: 70. Tenuipalpus orchidarum Sayed 1942: 96. Misidentification. Diagnosis. Dorsum with irregular striae but almost smooth in the Turkish specimens, longitudinal laterally on opisthosoma, venter with mainly transverse striae. Dorsal opisthosomal setae c 1, f 2 present; setae d 1 and e 1 absent. Venter with two pairs of 4 a setae. Spermatheca is a long, slender tube, terminating in small bulb. Female. Dimensions: Length of body excluding gnathosoma 240–254; width 139–141, infracapitulum covered by anterior prodorsal projection; Legs: I 119–122; II 105–109; III 100–107; IV 105–108; setae: v 2 6–7; sc 1 8–11; sc 2 30–35; c 1 8–13; c 3 10–18; d 3 8–10; e 3 11 –19; f 2 17–26; f 3 15–24; h 1 122–147; h 2 14–19. Body oval. Dorsum (Fig. 82). Anterior prodorsal projection deeply notched medially forming pair of pointed lobes medially. Prodorsum with an angulate anterolateral margin, just anterior to setae sc 2; opisthosoma gradually narrowing posteriorly, with two large lateral pores. Prodorsum and opisthosoma with scattered longitudinal to diagonal striae. Dorsal body setae slender, lanceolate, and weakly serrate. Venter (Figs 83–84). Venter striate. Metapodosoma with one pair of 3 a and two pairs of flagellate 4 a. Striation pattern of ventral and genital shields mostly transverse, with some longitudinal striae laterad in genital region. Pair of aggenital setae slightly longer than two pairs of genital setae, reaching to or slightly passing bases of genital setae; two pairs of pseudanal setae. Ventral setae smooth. Genital setae transversely aligned. Spermatheca a long, slender tube; terminating in a small bulb. Gnathosoma (Fig. 85). Infracapitulum covered by anterior projection, reaching to middle of femur I. Palp three-segmented, tarsus with a eupathidium, seta on tibia with at least two serrations; distal segment almost half length of second segment. Legs (Figs 86–88). Setae and solenidia (included in counts) on segments of legs I–IV: coxae 2 - 2 - 1 - 1, trochanters 1 - 1-2 - 1, femora 4 - 4 - 2 - 1, genua 2 - 2 -0-0, tibiae 5 - 5 - 3 - 3, and tarsi 9 (ω)- 9 (ω)- 5 - 5. Leg chaetotaxy as follows: trochanters I, II, IV v’; tr III l’, v ’; femora I-II d, v, bv”, l’; fe III d, ev ’; fe IV ev ’; genua I-II l’, l”; ge III-IV nude; tibiae I–II d, l’, l”, v’, v”; ti III–IV d, v’, v”; tarsus I–II u’, u”, p’, p” tc’, tc”, ft’, ft”, ω; ta III–IV u’, u”, tc’, tc”, ft’. Dorsal setae on femora I–III lanceolate and serrate, absent on genua I–II. Material examined. 1 female from Vitis vinifera L. (Vitaceae), Salihli/Manisa, 10 September 1997, S. Çobanoğlu; 2 females from Vitis vinifera, Menemen Çavuşköy /Izmir, 04–05 September 1997, (Collector; S. Çobanoğlu. Deposited at University of Ankara). Distribution. Azerbaijan, Cyprus, Egypt, Georgia, Greece, India, Iran, Kazakhstan, Ukraine (Sayed 1946; Pritchard & Baker 1958; Wainstein 1960; Dosse 1971; Sadana & Gupta 1984; Hatzinikolis 1986 a; Khanjani et al. 2013 b).Published as part of Çobanoğlu, Sultan, Ueckermann, Edward Albert & Sağlam, Hayriye Didem, 2016, The Tenuipalpidae of Turkey, with a key to species (Acari: Trombidiformes), pp. 151-186 in Zootaxa 4097 (2) on pages 177-178, DOI: 10.11646/zootaxa.4097.2.1, http://zenodo.org/record/27102
Adaptation in online social learning
No full textThis work studies social learning under non-stationary conditions. Although designed for online inference, traditional social learning algorithms perform poorly under drifting conditions. To mitigate this drawback, we propose the Adaptive Social Learning (ASL) strategy. This strategy leverages an adaptive Bayesian update, where the adaptation degree can be modulated by tuning a suitable step-size parameter. The learning performance of the ASL algorithm is examined by means of a steady-state analysis. It is shown that, under the regime of small step-sizes: i) consistent learning is possible; ii) and an accurate prediction of the performance can be furnished in terms of a Gaussian approximation
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